In the documentation page for this Repo, it suggests using a generic TTL to USB adapter to connect this device to a PC. The problem is that the ground wire in that interface port is connected to the battery side of the BMS, so if you encounter an overcurrent situation, and the BMS tries to turn the power off, your equipment could potentially try to pull all those amps THROUGH that tiny wire, and your attached computer's ground circuit.
In the documentation page for this Repo, it suggests using a generic TTL to USB adapter to connect this device to a PC. The problem is that the ground wire in that interface port is connected to the battery side of the BMS, so if you encounter an overcurrent situation, and the BMS tries to turn the power off, your equipment could potentially try to pull all those amps THROUGH that tiny wire, and your attached computer's ground circuit.
You must use an ISOLATED USB to serial converter with these BMS units, like this one: https://www.aliexpress.com/item/1005002854393461.html